reference test piece meaning in English
参考试块
Examples
- Reference test pieces
对比试块 - Charpy pendulum impact test - reference test pieces for verification of testing machines
摆锤式冲击试验.试验机械检定用标准试验样品 - Method for measurement on ultrasonic velocity of solid by pulse technique using reference test piece
用基准试样通过脉冲技术测量固体超音速的方法